Module litebridge.db.spi.impl

Package org.litebridge.db.spi.impl

Class ColumnIdentifierGenerator

java.lang.Object

org.litebridge.db.spi.impl.ColumnIdentifierGenerator

Direct Known Subclasses:

OracleColumnIdentifierGenerator

public class ColumnIdentifierGenerator
extends Object

The ColumnIdentifierGenerator class provides utilities for generating SQL column identifiers with optional table qualifiers, handling reserved keywords, and creating aliases for columns. This class can be extended to implement database-specific customizations of column identifier generation.

Constructor Summary

Constructors

Constructor	Description
ColumnIdentifierGenerator()

Method Summary

Modifier and Type	Method	Description
String	createAliasDeclaration(String alias)	Creates a SQL alias declaration.
String	createColumnRef(Column column, Operation operation, ClauseType clause)	Creates a SQL reference to a column.
String	createSelectColumn(Column column, Operation operation, ClauseType clause, boolean nested)	Creates a SQL identifier for a column to be used in a SELECT clause.
String	quoteIdentifier(String identifier)	Quotes a SQL identifier if it is a reserved word.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ColumnIdentifierGenerator

public ColumnIdentifierGenerator()

Method Details

createSelectColumn

public String createSelectColumn(Column column,
 Operation operation,
 ClauseType clause,
 boolean nested)

Creates a SQL identifier for a column to be used in a SELECT clause.

Parameters:

column - the column for which to create the identifier

operation - the current database operation

clause - the SQL clause where the identifier will be used

nested - whether the column is part of a nested expression

Returns:

the generated SQL column identifier

createColumnRef

public String createColumnRef(Column column,
 Operation operation,
 ClauseType clause)

Creates a SQL reference to a column.

Parameters:

column - the column to reference

operation - the current database operation

clause - the SQL clause where the reference will be used

Returns:

the generated SQL column reference

quoteIdentifier

public String quoteIdentifier(String identifier)

Quotes a SQL identifier if it is a reserved word.

Parameters:

identifier - the identifier to potentially quote

Returns:

the quoted (if necessary) or original identifier

createAliasDeclaration

public String createAliasDeclaration(String alias)

Creates a SQL alias declaration.

Parameters:

alias - the alias to declare

Returns:

the SQL alias declaration (e.g., "AS alias")